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SysTools PST Compress
Tool to Reduce the size of large Mailbox of Outlook 2016, 2013, 2010, 2007, etc. PST File

(Average Rating 4.7 Based on 118 Reviews)
  • Compress large PST file size by removing, extracting & saving attachments
  • Option to compact multiple Outlook PST file size in batch
  • Supports compression of both ANSI & UNICODE PST file types
  • Shrink PST file size to minimum possible size With No Data Loss
  • Generate a Log Report to show complete PST compaction details
  • MS Outlook Installation is required to decrease PST file size
  • Supports all MS Outlook Versions: Outlook 2016 & below (32 / 64 bit )
    PST Compression Tool compatible with Outlook 2003, 2007, 2010, 2013 and 2016 (32 / 64 bit Versions)
  • PST Compress tool supports Windows 10, 8 (32 / 64 bit ).
    PST File Compressor is compatible with Windows 10, 8, 8.1, 7, XP and older version.

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Purchase Now Price: $69 windows 10 & outlook 2016

Free Live Demo - SysTools PST Compress Tool Fully Secured Download Version

List of Key Features in SysTools PST Compress Tool

Software to Shrink Outlook PST file, Remove, Extract and Save PST file Attachments

compress large pst file

Compress Large PST File

An ANSI Data file that is about to reach 2 GB is a big concern as this leads to corruption. With this PST Shrinker, you can compact PST file and reduce the size so as to make it easily manageable. PST compact software will extract the attachment and save it as per the requirement.

PST compression options

PST File Compression Options

You can compact Outlook PST file in 3 different ways as per your choice:

  • Remove attachments
  • Extract and save attachments
  • Extract, save and compress attachments

remove attachments

Remove PST File Attachments

In order to reduce Outlook data file size and compress it, the PST compaction software allows removal of attachments. If you choose this option, the software will extract attachments and remove them permanently. This will shrink the size of PST file and remove the attachments from local machine as well.

extract and save

Extract & Save Attachments

With the help of this option, you can compact large PST file without deleting its attachments. The PST File Compression Tool will extract all attachments found in a data file and save them into a separate folder. You can find the PST file size reduced to a large extent with all attachments saved in a separate folder.

extract save and compress attachments

Extract, Save & Compress Attachments

Using this option you can extract and save the attachments. Besides this, you can also shrink the attachments to minimize the size of attachments as well. The Compact PST file tool will zip all the attachments that are found within a PST file.

show progress report

Show Progress Report

Once you start with PST file compression process, the PST File Compaction Utility will generate a complete export report together with current progress status. This report includes details like: PST file name, folder name, number of mails found, number of attachments found, and so on.

PST Compress Tool Screenshots

Pictorial Representation of PST Compact Software to Shrink Outlook PST File

PST Compress tool
Step 1: Download PST Compression Software and "Add PST File"
Remove PST File
Step 2: Click on Remove button to Compact Outlook PST File
select compression options
Step 3: Select Compression Options: Remove and Extract
compress pst file
Step 4: Hit on "Compress" to decrease or reduce PST size

Watch Live Video of PST Compress

Taped Representation To Compress Large PST Files in Outlook

Download Compact PST Software

Try the Demo Version of the Tool to Compress Outlook Data files

PST Compress Software

Size: 1.3 MB Version: 3.1


Trial Limitations

Trial version of PST Compress software compact the initial 5 emails from each folder of a PST File in order to render the preview.

Download PST Compress

Installation Uninstallation EULA

System Specifications

System Specifications
  • Hard Disk Space: 5 MB of free hard disk space

Application Prerequisites

  • Microsoft Outlook should be installed and should be configured properly for any valid or dummy profile/account.
  • If you are using Window 10/8.1/8/7 or Vista, then please launch the tool as "Run as Administrator".

Supported Editions

  • Microsoft Windows – 2000, 2003, 2008, XP, Vista, or Windows 7/8/8.1/10, 2008/2012 (32-bit & 64-bit)
  • MS Outlook – Outlook 2000, 2003, 2007, 2010, 2013, 2016 (32/64 bit )
Frequently Asked Question

How to Compress PST file step by step using this tool?

To shrink Outlook 2016, 2013, 2010, 2007, 2003, 2002 data file, follow the below mentioned steps:

  • Step 1: Install the PST compaction tool & then go to Start menu >> Programs >> SysTools PST Compact Tool
  • Step 2: Now, select Add file >> Select & Open
  • Step 3: Select the folder to shrink PST file & then click on Compress PST >> Browse file >> OK >> Compress PST
  • Step 4: Select an appropriate option among the three options: Remove Attachments, Extract & Save Attachments, Extract ,Save Compress Attachments & then click on Compress
  • Step 5: The software will show the status as "Compress Successfully" .

Is this software compatible to reduce multiple PST files?

Yes, PST Compact Software is able to downsize multiple PST files.

What is the need to shrink PST file?

With growth in data file size, Outlook becomes slower and after a maximum permissible limit, increase in file size causes PST to be corrupted. Compress PST File software is the best solution to overcome this problem. It removes/compresses/saves attachments in order to downsize PST file and improve Outlook performance.

Is this PST file compressor software compatible to the Windows 8 OS environment?

Yes, software works smoothly with Windows 10, 8 and all its below versions of the OS.

How long does it take to compact Outlook PST file?

It depends upon the size of your Data file. But usually, PST File Compressor shrinks the file in a very short time span.

Can I compress or reduce PST file wihout Outlook?

No, Outlook installation is necessary to run this tool. It should be installed and configured properly on machine. You can install any version of Outlook (32/64bit).

Can I compact bulk data files using this software?

Yes, you can add and process multiple PST files to the PST Shrink tool at a time and in a very short duration it will show you precise results.

Does This PST Compact Software decrease the size of PST file?

Software does not reduce the size of PST file directly. It has three options to reduce PST file. You can choose accordingly

  • Remove Attachments
  • Extract & Save Attachments
  • Extract, Save & Compress Attachments

Is there a size limitation set for the Outlook data file by the tool?

No, software can decrease Outlook PST file of any size without showing any performance issues. It can compact both ANSI & UNICODE type PST files.

Does software make any changes to the original PST file?

No, software only reads the original PST file & it does not produce any type of changes in this source PST file.

Is there any chance of data loss involved while using this software?

No, PST Compact Software is built with the best set of algorithms & latest technology so there is no chance of data loss involved with the usage of this tool. With the absence of malware, spyware, or adware along with no performance risks involved, it is completely safe & secure to use this tool.

PST Compress Tool Order Now

Get an Overview of PST Compact Tool Features - DEMO & Licensed Version

Features DEMO Version FULL Version
Add PST File & Folder
Remove Selected PST Files
Support All Outlook 2016 and Below Versions
Windows 10, 8 & All Other Previous Windows Version Supported
Three Compression Options
Batch item compression First 5 Items / PST File
Compress data Files 5 Items / Folder
Cost FREE $69
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PST Compress Tool





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SysTools PST Compress Tool

Alternate Payment Option



OFFER Valid Till 30th June

PST Compress + Outlook Recovery + PST Password Remover




$167   $99

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Bundle - PST Compress + Outlook Recovery + PST Password Remover

Alternate Payment Option

Note: Software will get delivered on your registered email id, within few minutes after placing the order.

Electronic Delivery: The delivery of product is automated. You will receive an email containing both the link to download the product and the activation key within few minutes after payment confirmation.

Purchase Order: You can place the order via Purchase Order(PO) Click Here

amazon        CR        NSIC         CIO       BBB
License Information Personal License Business License Enterprise License
File Limitation Compress Unlimited PST Files Compress Unlimited PST Files Compress Unlimited PST Files
Bulk Conversion Support
Free Product Updates
30 Day Money Back* Yes, Money is refundable Yes, Money is refundable Yes, Money is refundable
Features in Demoware & Commercial License

An Overview At The Contrast between Trial & Purchase License

PST Compress Tool DEMO Version FULL Version Bundle Offer
Add Outlook data File
Compress Huge PST Files
Reduce the Size of Multiple data Files
Save Compressed PST File
Outlook Recovery
Add Outlook PST Files & Folder
Preview all Elements of PST Files
Dual Scanning Mode
Export to PST, EML or MSG

Frequently Asked Questions

Listed Commonly Asked Questions and Answers

What Clients Say

I used SysTools PST Compress tool for the first time ever and I am really satisfied with the results. I used the tool to shrink my 20GB PST file and it just reduced the size in very short time span. I would like to thank the developer team.

Thomas Dikrose, Sweden

PST file shrinker is the perfect tool that I was looking for. It works flawlessly to compress PST file without losing any data. Totally satisfied with the results. Cheers to the developers!

Dan Torreto, Tokyo

I am completely contented with the performance of this software. The tool got me rid of all the trouble that I was having due to my large Data file. And the best part is that I didn’t lose any data. Thanks Guys!

Nicole James, USA

I was having a really bad time managing large PST files in my Outlook. This tool is the best choice to compress multiple PST files at once and also saved me a lot of time. I’m really impressed with the efficiency of the tool.

Michael Morrison, Europe

PST Compact Tool is the best choice for those users who want to reduce their Outlook data files without any hurdles. This tool works with ease in order to shrink PST file.

Tim Butler, Europe

Had an amazing experience using this Compress PST File Tool. It worked really well for me. I downsized all my data without any modification. Thanks to the developers!

Ben Show, UK

This Compact PST tool helped me a lot whenever I had to share an important file through the network connection. Thank You!

Mark, Hongkong

We are really impressed with the preciseness of Shrink PST tool. It helped us convert multiple number of PST files at once which was quite time saving, thanks to its Add Files and Folder facility.

Soniya Sharma, India

This is it !!! If you want to downsize your large Outlook Data files into compacted PST files in smaller sizes, then you can definitely try this !! I did the same & It made upto my expectations!! Thanks SysTools

Charls Stewert, Europe

I was having a lot of problems with my large PST file library, I came across this software while surfing on the internet. All my efforts made upto my expectations to decrease PST files!! Worth it !!

Roger, Norway

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